In opensim 4.4, simulations were performed on the "arm26.osim" model using python. The elbow joint angles were controlled by inputting excitation to the "BIClong" and "BICshort" muscles. As shown in the figure, when a step input was applied to each muscle, the elbow joint angle suddenly increased sh...

Hi, Mr Thomas Uchida.
Thank you for your response.
My question has been resolved!

I ran a simulation with the forward dynamics tool and in the results there are negative values for activation. The simulation conditions are as follows The model "arm26" was used. The simulation was performed for 20 seconds. The excitation was entered only for "BIClong" and its value was increased p...

I am currently looking to do a model simulation of FES (Functional Electrical Stimulation) using opensim version 4.4. The model I am using is "arm26.osim". The target motions I want to achieve with FES are flexion and extension of the elbow, and therefore the target muscles are the biceps brachii an...

I am a 22 year old Japanese graduate student doing research on FES (Functional Electrical Stimulation). Currently, I would like to perform a model simulation of FES on an OpenSim model ("arm26.osim" is the one I am currently using for trial purposes) using Python. So, I have created the program show...